Flooring surface



FIG. 1 is a top plan view of a flooring surface showing my new design;

FIG. 2 is a perspective view thereof;

FIG. 3 is a bottom edge view of FIG. 1;

FIG. 4 is a left side elevational view of FIG. 1; and,

FIG. 5 is an enlarged fragmentary side elevational view showing one of the raised elements. 

The ornamental design for a flooring surface, as shown and described. 